Comprehensive analysis of html comment tag

We often have to make some HTML comments next to some codes. This has many benefits, such as making it easier for other programmers in the project team to understand Your code, and it can facilitate your understanding and modification of your own code in the future.

Comment text is generally used as a reference for programmers, especially for large-scale website source codes developed by multiple people. Without comments, it cannot Let programmer B identify the code written by programmer A. In this way, if programmer A leaves the company, the code he wrote will be difficult to maintain. With comments, it will be easier to understand the code.

HTML comments are ignored by the browser, and HTML comments are written directly inside the website source code and are not displayed on the front end. As shown in the picture above, the green parts are comments and will not be displayed. Through the green text above, we can know what this code means and the beginning and end of the code. The HTML comment format is as follows:

<!--注释代码-->
<!--<p>注释文字</p>-->

The comment format in the css style is:

/*注释文字*/

As you can see, the content commented with "" will not displayed in the browser. The comment tag is used to insert comments in the source code, and the content of the comments will not be displayed in the browser. Commenting the key code will help you understand the source code you wrote at that time later. [4]

When writing HTML code, we often need to make comments next to some key codes. This has many benefits, such as: it is easier to understand, easier to find, or easier for other programmers in the project team to understand. Your code, and it will make it easier for you to modify your code in the future.

Commenting critical code is a good habit. When developing a website or functional module, code comments are particularly important. Because the code at that time was often hundreds or even thousands of lines, if you did not comment on the key code, you would often feel dizzy and even unable to understand the code you wrote at that time.

HTML comments are used in MVC design

Many modern open source code projects, especially MVC web design style open source code, these projects will Insert some comments into the traditional HTML code, and then add content such as advertisements inside these comments.

Discuz uses HTML comments to insert code and determine Discuz code

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